Why Is Investment in Energy Conservation and Efficiency a Necessary

Multiple Choice

Why is investment in energy conservation and efficiency a necessary component of any governmental energy policy?

A) it will result in an immediate increase in energy efficiency
B) the market will naturally favor products that are energy efficient in the long term, given enough time
C) it is often difficult for individuals or corporations to make purchases that save money in the long run if they are more expensive over the short term
D) all of these answer choices are correct